{
  "abstract": "We demonstrate stimulated Raman spectroscopy on dipole-forbidden fine-structure transitions in a fast ion beam. It is applied to the $\\mathrm{S}_{1/2}\\rightarrow\\mathrm{D}_{5/2}$ clock transition in $^{88}\\mathrm{Sr}^{+}$ and combined with a subsequent E1 transition to allow for its detection by standard fluorescence detection. Building on this, the $\\mathrm{D}_{3/2}\\rightarrow\\mathrm{D}_{5/2}$ fine-structure splitting is measured directly using a Doppler-free scheme employing two subsequent Raman transitions. These measurements demonstrate a path toward precision collinear laser spectroscopy of narrow transitions on short-lived isotopes beyond the linewidth limit of conventional electric-dipole spectroscopy, which can be used to probe fundamental aspects of atomic and nuclear physics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.35284",
  "author_total": 5,
  "authors": [
    {
      "name": "Julien Spahn"
    },
    {
      "name": "Hendrik Bodnar"
    },
    {
      "name": "Kristian König"
    },
    {
      "name": "Wilfried Nörtershäuser"
    },
    {
      "name": "Robbe Van Duyse"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/awkn65ed740tf.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.35284",
  "fulltext_url": null,
  "id": "awkn65ed740tf",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.35284",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "physics.atom-ph"
    ],
    [
      "openalex",
      "3107|Advanced Frequency and Time Standards"
    ]
  ],
  "openalex": "W7214774708",
  "pdf_url": "https://arxiv.org/pdf/2609.35284",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-28",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/awkn65ed740tf.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:12Z",
      "native_id": "2609.35284",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.35284"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.atom-ph",
      "subfield": "amo"
    }
  ],
  "title": "Raman Transitions in Collinear Laser Spectroscopy for High-Precision Frequency Measurements",
  "title_text": "Raman Transitions in Collinear Laser Spectroscopy for High-Precision Frequency Measurements",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:12Z",
  "url": "https://research.draconitic.com/paper/awkn65ed740tf",
  "venue": "arXiv",
  "versions": []
}